Streaming audio to device connected to external device

ABSTRACT

Aspects of the present disclosure involve a system comprising a computer-readable storage medium storing a program and method for streaming audio between devices. The program and method provide for receiving, from a first device associated with a first user, an indication that audio output of the first device is via an external audio output device; providing the indication to a second device associated with a second user, the first user and the second user corresponding to contacts in a messaging application; receiving, from the second device and in response to the providing, audio input and a request to stream the audio input to the first device; and providing, to the first device, the audio input for streaming on the first device.

TECHNICAL FIELD

The present disclosure relates generally to messaging applications, including configuring messaging applications to stream audio to a device connected to an external audio output device.

BACKGROUND

Messaging systems provide for the exchange of message content between users. For example, a messaging system allows a user to exchange message content with one or more other users.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

To easily identify the discussion of any particular element or act, the most significant digit or digits in a reference number refer to the figure number in which that element is first introduced.

FIG. 1 is a diagrammatic representation of a networked environment in which the present disclosure may be deployed, in accordance with some example embodiments.

FIG. 2 is a diagrammatic representation of a messaging client application, in accordance with some example embodiments.

FIG. 3 is a diagrammatic representation of a data structure as maintained in a database, in accordance with some example embodiments.

FIG. 4 is a diagrammatic representation of a message, in accordance with some example embodiments.

FIG. 5 is a flowchart for an access-limiting process, in accordance with some example embodiments.

FIG. 6 is an interaction diagram illustrating a process for streaming audio to a device connected to an external audio output device, in accordance with some example embodiments.

FIG. 7 illustrates a message thread interface with a user-selectable option for streaming audio to another device, in accordance with some example embodiments.

FIG. 8 illustrates a message thread interface indicating that audio is streaming to another device, in accordance with some example embodiments.

FIG. 9 illustrates a lock screen interface which includes a notification of receiving an audio stream, in accordance with some example embodiments.

FIG. 10 illustrates a message thread interface indicating receipt of an audio stream, in accordance with some example embodiments.

FIG. 11 illustrates a message thread interface indicating receipt of a saved audio file, in accordance with some example embodiments.

FIG. 12 is a flowchart illustrating a process for streaming audio to a device connected to an external audio output device, in accordance with some example embodiments.

FIG. 13 is block diagram showing a software architecture within which the present disclosure may be implemented, in accordance with some example embodiments.

FIG. 14 is a diagrammatic representation of a machine, in the form of a computer system within which a set of instructions may be executed for causing the machine to perform any one or more of the methodologies discussed, in accordance with some example embodiments.

DETAILED DESCRIPTION

A messaging system typically allow users to exchange content items (e.g., messages, images and/or video) with one another in a message thread. A messaging system may implement or otherwise work in conjunction with a social network system configured to maintain the identity of users and their corresponding relationships (e.g., friend relationships).

The disclosed embodiments provide for streaming audio to a friend's device, in a case where audio output of the friend's device is via a connected external device (e.g., suggesting that the friend is listening to audio via connected headphones). For example, the disclosed embodiments provide for displaying a notification that audio output of the friend's device is via the connected external device, and providing a user-selectable button for initiating streaming of audio to that friend's device. In response to user selection of the button (e.g., a press-and-hold gesture), captured audio input is streamed to the friend's device. In addition, the streamed audio is saved as an audio file, and a link to access the audio file is added to a message thread (e.g., for subsequent access by the friend). In this manner, user engagement with respect to messaging may be improved.

FIG. 1 is a block diagram showing an example messaging system 100 for exchanging data (e.g., messages and associated content) over a network. The messaging system 100 includes multiple instances of a client device 102, each of which hosts a number of applications including a messaging client application 104. Each messaging client application 104 is communicatively coupled to other instances of the messaging client application 104 and a messaging server system 110 via a network 108 (e.g., the Internet).

A messaging client application 104 is able to communicate and exchange data with another messaging client application 104 and with the messaging server system 110 via the network 108. The data exchanged between the messaging client application 104, and between a messaging client application 104 and the messaging server system 110, includes functions (e.g., commands to invoke functions) as well as payload data (e.g., text, audio, video or other multimedia data).

The messaging server system 110 provides server-side functionality via the network 108 to a particular messaging client application 104. While certain functions of the messaging system 100 are described herein as being performed by either a messaging client application 104 or by the messaging server system 110, the location of certain functionality either within the messaging client application 104 or the messaging server system 110 is a design choice. For example, it may be technically preferable to initially deploy certain technology and functionality within the messaging server system 110, but to later migrate this technology and functionality to the messaging client application 104 where a client device 102 has a sufficient processing capacity.

The messaging server system 110 supports various services and operations that are provided to the messaging client application 104. Such operations include transmitting data to, receiving data from, and processing data generated by the messaging client application 104. This data may include, message content, client device information, geolocation information, media annotation and overlays, message content persistence conditions, social network information, and live event information, as examples. Data exchanges within the messaging system 100 are invoked and controlled through functions available via user interfaces (UIs) of the messaging client application 104.

Turning now specifically to the messaging server system 110, an application programming interface server (API server 112) is coupled to, and provides a programmatic interface to, an application server 114. The application server 114 is communicatively coupled to a database server 120, which facilitates access to a database 122 in which is stored data associated with messages processed by the application server 114.

The API server 112 receives and transmits message data (e.g., commands and message payloads) between the client device 102 and the application server 114. Specifically, the API server 112 provides a set of interfaces (e.g., routines and protocols) that can be called or queried by the messaging client application 104 in order to invoke functionality of the application server 114. The API server 112 exposes various functions supported by the application server 114, including account registration, login functionality, the sending of messages, via the application server 114, from a particular messaging client application 104 to another messaging client application 104, the sending of media files (e.g., images or video) from a messaging client application 104 to the messaging server application 116, and for possible access by another messaging client application 104, the setting of a collection of media data (e.g., Story), the retrieval of a list of friends of a user of a client device 102, the retrieval of such collections, the retrieval of messages and content, the adding and deletion of friends to a social graph, the location of friends within a social graph, and opening an application event (e.g., relating to the messaging client application 104).

The application server 114 hosts a number of applications and subsystems, including a messaging server application 116, an image processing system 118 and a social network system 124. The messaging server application 116 implements a number of message processing technologies and functions, particularly related to the aggregation and other processing of content (e.g., textual and multimedia content) included in messages received from multiple instances of the messaging client application 104. As will be described in further detail, the text and media content from multiple sources may be aggregated into collections of content (e.g., called Stories or galleries). These collections are then made available, by the messaging server application 116, to the messaging client application 104. Other processor and memory intensive processing of data may also be performed server-side by the messaging server application 116, in view of the hardware requirements for such processing.

The application server 114 also includes an image processing system 118 that is dedicated to performing various image processing operations, typically with respect to images or video received within the payload of a message at the messaging server application 116.

The social network system 124 supports various social networking functions services, and makes these functions and services available to the messaging server application 116. To this end, the social network system 124 maintains and accesses an entity graph 304 (as shown in FIG. 3 ) within the database 122. Examples of functions and services supported by the social network system 124 include the identification of other users of the messaging system 100 with which a particular user has relationships or is “following”, and also the identification of other entities and interests of a particular user. Such other users may be referred to as the user's friends. In some embodiments, the social network system 124 may access location information associated with each of the user's friends to determine where they live or are currently located geographically.

In some embodiments, the client device 102 is configured to connect to an external audio output device 106, for the output of audio signal(s) provided via the client device 102. For example, the external audio output device 106 is configured to provide audio output based on an audio stream and/or audio file provided by (e.g., routed via) the client device 102. The external audio output device 106 can correspond to one or more of earphones, earbuds, headphones, a headset, a speaker, a pair of glasses with speakers, a head mounted display, another type of wearable device configured to output audio, and the like.

In some embodiments, the client device 102 is configured to provide audio output via the external audio output device 106, by way of a wireless connection such as Bluetooth®, Wi-Fi®, or the like. Alternatively or in addition, the client device 102 is configured to provide audio output via the external audio output device 106 by way of a wired connection. In some embodiments, the client device 102 is configured to provide indication(s) (e.g., via an operating system call) as to when a wireless and/or wired connection is established for providing audio output to the external audio output device 106. For example, establishing the wireless connection between the client device 102 and the external audio output device 106 corresponds to a pairing of the devices. The client device 102 is configured to provide indication(s) (e.g., via an operating system call) as to when audio is being output via the connected external audio output device 106.

FIG. 2 is block diagram illustrating further details regarding the messaging system 100, according to example embodiments. Specifically, the messaging system 100 is shown to comprise the messaging client application 104 and the application server 114, which in turn embody a number of some subsystems, namely an ephemeral timer system 202, a collection management system 204 and an annotation system 206.

The ephemeral timer system 202 is responsible for enforcing the temporary access to content permitted by the messaging client application 104 and the messaging server application 116. To this end, the ephemeral timer system 202 incorporates a number of timers that, based on duration and display parameters associated with a message, or collection of messages (e.g., a Story), selectively display and enable access to messages and associated content via the messaging client application 104. Further details regarding the operation of the ephemeral timer system 202 are provided below.

The collection management system 204 is responsible for managing collections of media (e.g., collections of text, image video and audio data). In some examples, a collection of content (e.g., messages, including images, video, text and audio) may be organized into an “event gallery” or an “event Story.” Such a collection may be made available for a specified time period, such as the duration of an event to which the content relates. For example, content relating to a music concert may be made available as a “Story” for the duration of that music concert. The collection management system 204 may also be responsible for publishing an icon that provides notification of the existence of a particular collection to the user interface of the messaging client application 104.

The collection management system 204 furthermore includes a curation interface 208 that allows a collection manager to manage and curate a particular collection of content. For example, the curation interface 208 enables an event organizer to curate a collection of content relating to a specific event (e.g., delete inappropriate content or redundant messages). Additionally, the collection management system 204 employs machine vision (or image recognition technology) and content rules to automatically curate a content collection. In certain embodiments, compensation may be paid to a user for inclusion of user-generated content into a collection. In such cases, the curation interface 208 operates to automatically make payments to such users for the use of their content.

The annotation system 206 provides various functions that enable a user to annotate or otherwise modify or edit media content associated with a message. For example, the annotation system 206 provides functions related to the generation and publishing of media overlays for messages processed by the messaging system 100. The annotation system 206 operatively supplies a media overlay or supplementation (e.g., an image filter) to the messaging client application 104 based on a geolocation of the client device 102. In another example, the annotation system 206 operatively supplies a media overlay to the messaging client application 104 based on other information, such as social network information of the user of the client device 102. A media overlay may include audio and visual content and visual effects. Examples of audio and visual content include pictures, texts, logos, animations, and sound effects. An example of a visual effect includes color overlaying. The audio and visual content or the visual effects can be applied to a content item (e.g., a photo) at the client device 102. For example, the media overlay may include text that can be overlaid on top of a photograph taken by the client device 102. In another example, the media overlay includes an identification of a location overlay (e.g., Venice beach), a name of a live event, or a name of a merchant overlay (e.g., Beach Coffee House). In another example, the annotation system 206 uses the geolocation of the client device 102 to identify a media overlay that includes the name of a merchant at the geolocation of the client device 102. The media overlay may include other indicia associated with the merchant. The media overlays may be stored in the database 122 and accessed through the database server 120.

In one example embodiment, the annotation system 206 provides a user-based publication platform that enables users to select a geolocation on a map, and upload content associated with the selected geolocation. The user may also specify circumstances under which a particular media overlay should be offered to other users. The annotation system 206 generates a media overlay that includes the uploaded content and associates the uploaded content with the selected geolocation.

In another example embodiment, the annotation system 206 provides a merchant-based publication platform that enables merchants to select a particular media overlay associated with a geolocation via a bidding process. For example, the annotation system 206 associates the media overlay of a highest bidding merchant with a corresponding geolocation for a predefined amount of time.

FIG. 3 is a schematic diagram illustrating data structures 300 which may be stored in the database 122 of the messaging server system 110, according to certain example embodiments. While the content of the database 122 is shown to comprise a number of tables, it will be appreciated that the data could be stored in other types of data structures (e.g., as an object-oriented database).

The database 122 includes message data stored within a message table 318. The entity table 302 stores entity data, including an entity graph 304. Entities for which records are maintained within the entity table 302 may include individuals, corporate entities, organizations, objects, places, events, etc. Regardless of type, any entity regarding which the messaging server system 110 stores data may be a recognized entity. Each entity is provided with a unique identifier, as well as an entity type identifier (not shown).

The entity graph 304 furthermore stores information regarding relationships and associations between entities. Such relationships may be social, professional (e.g., work at a common corporation or organization), interested-based or activity-based, merely for example.

The database 122 also stores annotation data, in the example form of filters, in an annotation table 312. Filters for which data is stored within the annotation table 312 are associated with and applied to videos (for which data is stored in a video table 310) and/or images (for which data is stored in an image table 308). Filters, in one example, are overlays that are displayed as overlaid on an image or video during presentation to a recipient user. Filters may be of varies types, including user-selected filters from a gallery of filters presented to a sending user by the messaging client application 104 when the sending user is composing a message. Other types of filters include geolocation filters (also known as geo-filters) which may be presented to a sending user based on geographic location. For example, geolocation filters specific to a neighborhood or special location may be presented within a user interface by the messaging client application 104, based on geolocation information determined by a GPS unit of the client device 102. Another type of filter is a data filter, which may be selectively presented to a sending user by the messaging client application 104, based on other inputs or information gathered by the client device 102 during the message creation process. Example of data filters include current temperature at a specific location, a current speed at which a sending user is traveling, battery life for a client device 102, or the current time.

Other annotation data that may be stored within the image table 308 is so-called “Lens” data. A “Lens” may be a real-time special effect and sound that may be added to an image or a video.

As mentioned above, the video table 310 stores video data which, in one embodiment, is associated with messages for which records are maintained within the message table 318. Similarly, the audio table 316 stores audio data which is associated with messages for which records are maintained within the message table 318. Moreover, the image table 308 stores image data associated with messages for which message data is stored in the entity table 302. The entity table 302 may associate various annotations from the annotation table 312 with various images, videos and/or audio files stored in the image table 308, video table 310 and/or the audio table 316.

A story table 306 stores data regarding collections of messages and associated image, video, or audio data, which are compiled into a collection (e.g., a Story or a gallery). The creation of a particular collection may be initiated by a particular user (e.g., each user for which a record is maintained in the entity table 302). A user may create a “personal Story” in the form of a collection of content that has been created and sent/broadcast by that user. To this end, the user interface of the messaging client application 104 may include an icon that is user-selectable to enable a sending user to add specific content to his or her personal Story.

A collection may also constitute a “live Story,” which is a collection of content from multiple users that is created manually, automatically, or using a combination of manual and automatic techniques. For example, a “live Story” may constitute a curated stream of user-submitted content from varies locations and events. Users whose client devices have location services enabled and are at a common location event at a particular time may, for example, be presented with an option, via a user interface of the messaging client application 104, to contribute content to a particular live Story. The live Story may be identified to the user by the messaging client application 104, based on his or her location. The end result is a “live Story” told from a community perspective.

A further type of content collection is known as a “location Story”, which enables a user whose client device 102 is located within a specific geographic location (e.g., on a college or university campus) to contribute to a particular collection. In some embodiments, a contribution to a location Story may require a second degree of authentication to verify that the end user belongs to a specific organization or other entity (e.g., is a student on the university campus).

A group profile table 314 stores data regarding group profiles, where a group profile includes saved information that is common to a group of at least two users (e.g., and where a group profile for two users may also be referred to as a friendship profile). Such information may include message content, such as but not limited to, images, videos, audio files, attachments, and messages (e.g., text-based messages), with any corresponding annotation data, exchanged within one or more message thread(s) with respect to a group of users. The saved information included within a group profile may further include shared settings that apply to the group, such that an update to a shared setting by one group user applies to all users within the group.

In some embodiments, messages, images, videos and/or attachments are added to the group profile in response to a specific request from one of the users in the group. For example, if the users in the group exchange message content (e.g., messages, images, videos and/or attachments), all of the message content, by default, are typically be automatically deleted and removed from storage after a specified time period (e.g., one hour, one minute, one second, etc.). However, if prior to the specified time period when the message content is automatically deleted, one of the users in the group selects certain message content (e.g., one or more messages, images, videos and/or attachments) for permanent retention (e.g., via a “save” interface), the selected message content is added to the group profile. For example, the saved message content is viewable by any one of the users in the group at any given time.

FIG. 4 is a schematic diagram illustrating a structure of a message 400, according to some embodiments, generated by a messaging client application 104 for communication to a further messaging client application 104 or the messaging server application 116. The content of a particular message 400 is used to populate the message table 318 stored within the database 122, accessible by the messaging server application 116. Similarly, the content of a message 400 is stored in memory as “in-transit” or “in-flight” data of the client device 102 or the application server 114. The message 400 is shown to include the following components:

-   -   A message identifier 402: a unique identifier that identifies         the message 400.     -   A message text payload 404: text, to be generated by a user via         a user interface of the client device 102 and that is included         in the message 400.     -   A message image payload 406: image data, captured by a camera         component of a client device 102 or retrieved from a memory         component of a client device 102, and that is included in the         message 400.     -   A message video payload 408: video data, captured by a camera         component or retrieved from a memory component of the client         device 102 and that is included in the message 400.     -   A message audio payload 410: audio data, captured by a         microphone or retrieved from a memory component of the client         device 102, and that is included in the message 400.     -   Message annotations 412: annotation data (e.g., filters,         stickers or other enhancements) that represents annotations to         be applied to message image payload 406, message video payload         408, or message audio payload 410 of the message 400.     -   A message duration parameter 414: parameter value indicating, in         seconds, the amount of time for which content of the message         (e.g., the message image payload 406, message video payload 408,         message audio payload 410) is to be presented or made accessible         to a user via the messaging client application 104.     -   A message geolocation parameter 416: geolocation data (e.g.,         latitudinal and longitudinal coordinates) associated with the         content payload of the message. Multiple message geolocation         parameter 416 values may be included in the payload, each of         these parameter values being associated with respect to content         items included in the content (e.g., a specific image within the         message image payload 406, or a specific video in the message         video payload 408).     -   A message story identifier 418: identifier values identifying         one or more content collections (e.g., “Stories”) with which a         particular content item in the message image payload 406 of the         message 400 is associated. For example, multiple images within         the message image payload 406 may each be associated with         multiple content collections using identifier values.     -   A message tag 420: each message 400 may be tagged with multiple         tags, each of which is indicative of the subject matter of         content included in the message payload. For example, where a         particular image included in the message image payload 406         depicts an animal (e.g., a lion), a tag value may be included         within the message tag 420 that is indicative of the relevant         animal. Tag values may be generated manually, based on user         input, or may be automatically generated using, for example,         image recognition.     -   A message sender identifier 422: an identifier (e.g., a         messaging system identifier, email address, or device         identifier) indicative of a user of the client device 102 on         which the message 400 was generated and from which the message         400 was sent.     -   A message receiver identifier 424: an identifier (e.g., a         messaging system identifier, email address, or device         identifier) indicative of a user of the client device 102 to         which the message 400 is addressed.

The contents (e.g., values) of the various components of message 400 may be pointers to locations in tables within which content data values are stored. For example, an image value in the message image payload 406 may be a pointer to (or address of) a location within an image table 308. Similarly, values within the message video payload 408 may point to data stored within a video table 310, values within the message audio payload 410 may point to data stored within an audio table 316, values stored within the message annotations 412 may point to data stored in an annotation table 312, values stored within the message story identifier 418 may point to data stored in a story table 306, and values stored within the message sender identifier 422 and the message receiver identifier 424 may point to user records stored within an entity table 302.

FIG. 5 is a schematic diagram illustrating an access-limiting process 500, in terms of which access to content (e.g., an ephemeral message 502, and associated multimedia payload of data) or a content collection (e.g., an ephemeral message group 504) may be time-limited (e.g., made ephemeral).

An ephemeral message 502 is shown to be associated with a message duration parameter 506, the value of which determines an amount of time that the ephemeral message 502 will be displayed to a receiving user of the ephemeral message 502 by the messaging client application 104. In one embodiment, an ephemeral message 502 is viewable by a receiving user for up to a maximum of 10 seconds, depending on the amount of time that the sending user specifies using the message duration parameter 506.

The message duration parameter 506 and the message receiver identifier 424 are shown to be inputs to a message timer 512, which is responsible for determining the amount of time that the ephemeral message 502 is shown to a particular receiving user identified by the message receiver identifier 424. In particular, the ephemeral message 502 will only be shown to the relevant receiving user for a time period determined by the value of the message duration parameter 506. The message timer 512 is shown to provide output to a more generalized ephemeral timer system 202, which is responsible for the overall timing of display of content (e.g., an ephemeral message 502) to a receiving user.

The ephemeral message 502 is shown in FIG. 5 to be included within an ephemeral message group 504 (e.g., a collection of messages in a personal Story, or an event Story). The ephemeral message group 504 has an associated group duration parameter 508, a value of which determines a time-duration for which the ephemeral message group 504 is presented and accessible to users of the messaging system 100. The group duration parameter 508, for example, may be the duration of a music concert, where the ephemeral message group 504 is a collection of content pertaining to that concert. Alternatively, a user (either the owning user or a curator user) may specify the value for the group duration parameter 508 when performing the setup and creation of the ephemeral message group 504.

Additionally, each ephemeral message 502 within the ephemeral message group 504 has an associated group participation parameter 510, a value of which determines the duration of time for which the ephemeral message 502 will be accessible within the context of the ephemeral message group 504. Accordingly, a particular ephemeral message group 504 may “expire” and become inaccessible within the context of the ephemeral message group 504, prior to the ephemeral message group 504 itself expiring in terms of the group duration parameter 508. The group duration parameter 508, group participation parameter 510, and message receiver identifier 424 each provide input to a group timer 514 which operationally determines, firstly, whether a particular ephemeral message 502 of the ephemeral message group 504 will be displayed to a particular receiving user and, if so, for how long. Note that the ephemeral message group 504 is also aware of the identity of the particular receiving user as a result of the message receiver identifier 424.

Accordingly, the group timer 514 operationally controls the overall lifespan of an associated ephemeral message group 504, as well as an individual ephemeral message 502 included in the ephemeral message group 504. In one embodiment, each and every ephemeral message 502 within the ephemeral message group 504 remains viewable and accessible for a time-period specified by the group duration parameter 508. In a further embodiment, a certain ephemeral message 502 may expire, within the context of ephemeral message group 504, based on a group participation parameter 510. Note that a message duration parameter 506 may still determine the duration of time for which a particular ephemeral message 502 is displayed to a receiving user, even within the context of the ephemeral message group 504. Accordingly, the message duration parameter 506 determines the duration of time that a particular ephemeral message 502 is displayed to a receiving user, regardless of whether the receiving user is viewing that ephemeral message 502 inside or outside the context of an ephemeral message group 504.

The ephemeral timer system 202 may furthermore operationally remove a particular ephemeral message 502 from the ephemeral message group 504 based on a determination that it has exceeded an associated group participation parameter 510. For example, when a sending user has established a group participation parameter 510 of 24 hours from posting, the ephemeral timer system 202 will remove the relevant ephemeral message 502 from the ephemeral message group 504 after the specified 24 hours. The ephemeral timer system 202 also operates to remove an ephemeral message group 504 either when the group participation parameter 510 for each and every ephemeral message 502 within the ephemeral message group 504 has expired, or when the ephemeral message group 504 itself has expired in terms of the group duration parameter 508.

In certain use cases, a creator of a particular ephemeral message group 504 may specify an indefinite group duration parameter 508. In this case, the expiration of the group participation parameter 510 for the last remaining ephemeral message 502 within the ephemeral message group 504 will determine when the ephemeral message group 504 itself expires. In this case, a new ephemeral message 502, added to the ephemeral message group 504, with a new group participation parameter 510, effectively extends the life of an ephemeral message group 504 to equal the value of the group participation parameter 510.

Responsive to the ephemeral timer system 202 determining that an ephemeral message group 504 has expired (e.g., is no longer accessible), the ephemeral timer system 202 communicates with the messaging system 100 (and, for example, specifically the messaging client application 104) to cause an indicium (e.g., an icon) associated with the relevant ephemeral message group 504 to no longer be displayed within a user interface of the messaging client application 104. Similarly, when the ephemeral timer system 202 determines that the message duration parameter 506 for a particular ephemeral message 502 has expired, the ephemeral timer system 202 causes the messaging client application 104 to no longer display an indicium (e.g., an icon or textual identification) associated with the ephemeral message 502.

FIG. 6 is an interaction diagram illustrating a process 600 for streaming audio to a device connected to an external audio output device, in accordance with some example embodiments. For explanatory purposes, the process 600 is primarily described herein with reference to a first client device 602 and second client device 604 (e.g., each of which may correspond to a respective client device 102), and with reference to the messaging server system 110. However, the process 600 is not limited to the first client device 602, the second client device 604 and the messaging server system 110. Moreover, one or more blocks (or operations) of the process 600 may be performed by one or more other components of the first client device 602, the second client device 604 or the messaging server system 110, and/or by other suitable devices. Further for explanatory purposes, the blocks of the process 600 are described herein as occurring in serial, or linearly. However, multiple blocks of the process 600 may occur in parallel. In addition, the blocks of the process 600 need not be performed in the order shown and/or one or more blocks of the process 600 need not be performed and/or can be replaced by other operations.

In some embodiments, each of the first client device 602 and the second client device 604 have instances of the messaging client application 104 installed thereon. The first client device 602 and the second client device 604 are associated with a respective first user and second user(s) of the messaging server system 110. For example, the first user is associated with a first user account of the messaging server system 110, and each of the second user(s) is associated with respective second user account(s) of the messaging server system 110.

As noted above, the first user and the second user(s) are identified by the messaging server system 110 based on unique identifiers (e.g., a messaging system identifier, email address and/or a device identifier) associated with respective user accounts for the first user and second user(s). In some embodiments, the messaging server system 110 implements and/or works in conjunction with a social network system 124 which is configured to identify other users (e.g., friends) with which a particular user has relationships.

As described herein, the messaging server system 110 is configured to provide a user-selectable interface on the second client device 604, for streaming audio input captured at the second client device 604 to the first client device 602. The user-selectable interface is provided in a condition when audio output of the first client device 602 is via external audio output device 106. In some embodiments, either of the first user or the second user may have authorized for such streaming. For example, the authorization may have been provided by the first and/or second user via a group profile interface, which is configured to provide access to information stored within a group profile corresponding to the first and second users. As noted above, a group profile saves information that is shared between the first and second user, including exchanged message content (e.g., images, videos, audio files, messages and/or any corresponding annotation data) and/or shared settings (e.g., where an update by one user applies to both users). For example, one such shared setting is the authorization for the first and second users to stream audio based on the above condition.

At block 606, the first client device 602 determines that audio output is via the external audio output device 106. The messaging client application 104 running on the first client device 602 may make such determination in different manners. In some embodiments, the messaging client application 104 determines that the first client device 602 is paired with the external audio output device 106, thereby indicating that audio output is via the external audio output device 106 (e.g., since audio is configured to be output via the paired external audio output device 106). For example, this may correspond with the first user wearing headphones and/or having headphones that are connected. In other embodiments, the messaging client application 104 determines that the first client device 602 is currently outputting audio via the paired external audio output device 106, thereby indicating audio output is via the external audio output device 106. For example, this may correspond with the first user listening to music and/or actively using the headphones. The messaging client application 104 is configured to make either of the above determinations, for example, based on an operating system call on the first client device 602.

The first client device 602 sends an indication of audio output via the external audio output device 106 (operation 608). The messaging server system 110 sends the indication of audio output to the second client device 604 (operation 610).

In response to receiving the indication, the messaging client application 104 running on the second client device 604 displays a graphical element (e.g., a user-selectable button) to initiate the streaming of audio to the first client device 602 (block 612). For example, the messaging client application 104 displays the button in association with a message input box within a message thread interface of the messaging client application 104. For example, the message thread interface presents message content (e.g., messages, image, video and/or audio) exchanged between the first user and the second user within a message thread, and includes the message input box for adding content to the message thread. As discussed further below with respect to FIG. 8 , in some embodiments, the messaging client application 104 displays the button with an accompanying hint, to notify the second user of the option to stream audio to the first client device 602 corresponding to the first user.

In the example of FIG. 6 , the second user opts to stream audio to the first client device 602. Thus, the second client device 604 receives selection of the button, together with audio input (e.g., voice input captured by a microphone on the second client device 604) for streaming to the first client device 602 (block 614). In one or more implementations, the user selection corresponds to a press-and-hold gesture (e.g., a long press) of the button displayed by the messaging client application 104. For example, the messaging client application 104 is configured to detect the initial press and hold portion of the press-and-hold gesture, and in response, initiate the capture of audio data via the microphone of the second client device 604. In addition, the second client device 604 is configured to provide the captured audio, together with a request to stream the captured audio, to the messaging server system 110, for streaming on the first client device 602 (operation 616). Moreover the messaging client application 104 is configured to continue capturing and providing audio input to the messaging server system 110 for the duration of the button being pressed/held.

In response to receiving the request, the messaging server system 110 initiates storing of an audio file corresponding to the audio input (block 618), for example, in association with the audio table 316. In some embodiments, the audio file is saved by the messaging server system 110 (e.g., subject to an expiration as implemented by the ephemeral timer system 202), so as to be accessible by the first client device 602 and/or the second client device 604. In this manner, if the first user were to miss or otherwise wish to re-listen to the audio stream, they could do so by selecting a link (e.g., in a message thread) to the saved audio file as discussed below.

Moreover, the messaging server system 110 provides the audio input captured at the second client device 604 as an audio stream to the first client device 602 (operation 620). In some embodiments, the messaging server system 110 further provides an indication that the audio stream is being provided by the second user. The first client device 602 streams the audio input and displays or otherwise provides an indication of the second user (block 622). For example, the messaging client application 104 displays a name and/or avatar of the second user in association with the streaming audio (e.g., as discussed below with respect to FIG. 9 and FIG. 10 ).

As noted above, in some embodiments, the messaging server system 110 provides for streaming the audio data for the duration of the user holding the button. The messaging client application 104 running on the second client device 604 is configured to detect the release portion of the press-and-hold gesture (block 624) and in response, cease capture of audio input via the microphone of the second device. Moreover, the messaging client application 104 sends an indication that audio capture has stopped at the second client device 604 (operation 626). In response to receiving this indication, the messaging server system 110 is configured to complete storing of the audio file (e.g., as initiated at block 618) corresponding to the audio stream (block 628).

The messaging server system 110 is further configured to generate a link to the saved audio file, for example, in association with the audio table 316. Moreover, the messaging server system 110 sends the generated link for accessing the saved audio file to the first client device 602 (operation 630.). In some embodiments, the messaging server system 110 also sends the link to the second client device 604.

The messaging client application 104 running on the first client device 602 and/or the second client device 604 provides for displaying the link within a message thread of the messaging client application 104 (block 632). User selection of the link within the message thread provides for playback of the linked audio file. The saved audio file is subject to expiration based on the ephemeral timer system 202, for example, unless explicitly indicated to be saved/retained by a user (e.g., via user input received in the message thread).

FIG. 7 illustrates a message thread interface 700 with a user-selectable option (e.g., 706) for streaming audio to another device, in accordance with some example embodiments. For example, with respect to FIG. 6 , the message thread interface 700 displayed by the messaging client application 104 is configured to present message content (e.g., messages, image, video and/or audio) exchanged between the first user and the second user within a message thread.

As noted above, the second client device 604 receives indication that audio output for the first client device 602 is via the external audio output device 106. In response, the messaging client application 104 running on the second client device 604 provides a user-selectable button 706 for streaming audio to the first client device 602. The second user may press and hold the button 706 to perform such audio streaming. In some embodiments, the messaging client application 104 further displays a hint 704 to inform the second user to press-and-hold the button 706 for audio streaming. Moreover, the messaging client application 104 provides a notification 702 in association with an avatar/name corresponding to the first user, indicating that audio output for the first user (e.g., the first client device 602) is via the external audio output device 106. For example, the notification 702 indicates that the first user is wearing headphones (e.g., has headphones that are connected/paired to the first client device 602). Alternatively or in addition, the notification 702 may indicate that the first user is listening to music (e.g., actively using headphones) via the paired first client device 602 as described above.

FIG. 8 illustrates the message thread interface 700 with an indication that audio is streaming to another device, in accordance with some example embodiments. For example, for the duration of pressing and holding of the button 706, the messaging client application 104 displays a notification 802 that the second client device 604 is streaming audio content to the first client device 602 (e.g., via the messaging server system 110). In the example of FIG. 8 . the notification 702 indicates continued audio output (e.g., by the first client device 602 corresponding to the first user) via the external audio output device 106.

FIG. 9 illustrates a lock screen interface 900 which includes a notification 902 of receiving an audio stream, in accordance with some example embodiments. The lock screen interface 900 corresponds to a device lock screen provided by an operating system of the client device 102. For example, a device lock screen may provide for immediate or otherwise expedited access to the client device 102, by requiring that the user perform a certain action in order to receive access (e.g., entering a password, using a certain button combination, or performing a certain gesture).

In the example of FIG. 9 , the notification 902 indicates that the first client device 602 is receiving an audio stream provided by the second client device 604 (e.g., via the messaging server system 110). The notification 902 includes the messaging application name 908, a user name 904 (e.g., corresponding to the second user) and/or a streaming indicator 906. For example, the streaming indicator 906 includes an icon which represents that the second user is continuing to provide streaming audio from the second client device 604 to the first client device 602 (e.g., via continued holding of the button 706).

By virtue of presenting the notification 902 in this manner, the first user may be notified of the streaming audio, even in a case where the first user is not using the messaging client application 104. For example, the notification 902 is presented on the lock screen interface 900 when the messaging client application 104 is not running or alternatively, not foregrounded, on the client device 102.

In some embodiments, the notification 902 corresponds to a user-selectable link, the selection of which provides for redirecting to a message thread displayed on the first client device 602. In some embodiments, redirecting to the message thread requires the user to perform the above-noted certain action (e.g., password, button combination, certain gesture).

FIG. 10 illustrates a message thread interface 1000 indicating receipt of an audio stream, in accordance with some example embodiments. For example, the messaging client application 104 displays the message thread interface 1000 in response to user selection of the notification 902 as discussed above, and/or in response to user input from within an interface provided by the messaging client application 104. In the example of FIG. 10 , the message thread interface 1000 includes the streaming indicator 906 to indicate that the second user is continuing to provide streaming audio from the second client device 604 to the first client device 602 (e.g., via continued holding of the button 706). In addition, the message thread interface 1000 includes a user representation 1002 for the second user. For example, the user representation 1002 corresponds to an avatar (e.g., bitmoji) of the second user and/or includes the name of the second user.

FIG. 11 illustrates the message thread interface 1000 indicating receipt of a saved audio file, in accordance with some example embodiments. As noted above with respect to FIG. 6 , the messaging server application 116 is configured to save an audio file of the audio stream, and to generate a link to the saved audio file. The messaging client application 104 is configured to display the link 1102 within the message thread interface 1000, together with a prior stream icon 1104 indicating that the audio file corresponds to a prior audio stream from the second client device 604 (e.g., the second user) to the first client device 602 (e.g., the first user as represented by the user representation 1002). The messaging client application 104 is configured to play back the audio file in response to user selection of the link 1102.

FIG. 12 is a flowchart illustrating a process 1200 for streaming audio to a device connected to an external audio output device, in accordance with some example embodiments. For explanatory purposes, the process 1200 is primarily described herein with reference to the messaging server system 110, the first client device 602 and the second client device 604 of FIG. 1 . However, one or more blocks (or operations) of the process 1200 may be performed by one or more other components of the messaging server system 110, the first client device 602, the second client device 604, and/or by other suitable devices. Further for explanatory purposes, the blocks of the process 1200 are described herein as occurring in serial, or linearly. However, multiple blocks of the process 1200 may occur in parallel. In addition, the blocks of the process 1200 need not be performed in the order shown and/or one or more blocks of the process 1200 need not be performed and/or can be replaced by other operations.

The messaging server system 110 receives, from a first client device 602 associated with a first user, an indication that audio output of the first client device 602 is via an external audio output device 106 (block 1202). The external audio output device 106 may be headphones or earbuds.

The messaging server system 110 provides the indication to a second client device 604 associated with a second user, the first user and the second user corresponding to contacts in a messaging application (block 1204). The indication may be for causing the second client device 604 to display a graphical element for initiating audio streaming to the first client device 602. The request to stream the audio input may be based on user selection of the graphical element. The user selection may correspond to a press-and-hold gesture.

The messaging server system 110 receives, from the second client device 604 and in response to the providing, audio input and a request to stream the audio input to the first client device 602 (block 1206). The audio input may be for streaming on the first client device 602 via the external audio output device 106. The audio input may correspond to voice input provided by the second user at the second client device 604.

The messaging server system 110 provides, to the first client device 602, the audio input for streaming on the first client device 602 (block 1208). The messaging server system 110 may determine that providing the audio input for streaming is authorized, based on a setting shared by the first user and the second user with respect to the messaging application.

The messaging server system 110 may provide, to the first client device 602, an indication of the second user, for causing the first client device 602 to display a representation of the second user in association with streaming the audio input.

The messaging server system 110 may store the audio input as an audio file, and provide, to the first client device 602, a link to the audio file for display within a message thread on the first client device 602. User selection of the link provides for playback of the audio file on the first client device 602.

FIG. 13 is a block diagram 1300 illustrating a software architecture 1304, which can be installed on any one or more of the devices described herein. The software architecture 1304 is supported by hardware such as a machine 1302 that includes processors 1320, memory 1326, and I/O components 1338. In this example, the software architecture 1304 can be conceptualized as a stack of layers, where each layer provides a particular functionality. The software architecture 1304 includes layers such as an operating system 1312, libraries 1310, frameworks 1308, and applications 1306. Operationally, the applications 1306 invoke API calls 1350 through the software stack and receive messages 1352 in response to the API calls 1350.

The operating system 1312 manages hardware resources and provides common services. The operating system 1312 includes, for example, a kernel 1314, services 1316, and drivers 1322. The kernel 1314 acts as an abstraction layer between the hardware and the other software layers. For example, the kernel 1314 provides memory management, processor management (e.g., scheduling), component management, networking, and security settings, among other functionality. The services 1316 can provide other common services for the other software layers. The drivers 1322 are responsible for controlling or interfacing with the underlying hardware. For instance, the drivers 1322 can include display drivers, camera drivers, BLUETOOTH® or BLUETOOTH® Low Energy drivers, flash memory drivers, serial communication drivers (e.g., Universal Serial Bus (USB) drivers), WI-FI® drivers, audio drivers, power management drivers, and so forth.

The libraries 1310 provide a low-level common infrastructure used by the applications 1306. The libraries 1310 can include system libraries 1318 (e.g., C standard library) that provide functions such as memory allocation functions, string manipulation functions, mathematic functions, and the like. In addition, the libraries 1310 can include API libraries 1324 such as media libraries (e.g., libraries to support presentation and manipulation of various media formats such as Moving Picture Experts Group-4 (MPEG4), Advanced Video Coding (H.264 or AVC). Moving Picture Experts Group Layer-3 (MP3), Advanced Audio Coding (AAC). Adaptive Multi-Rate (AMR) audio codec, Joint Photographic Experts Group (JPEG or JPG), or Portable Network Graphics (PNG)), graphics libraries (e.g., an OpenGL framework used to render in two dimensions (2D) and three dimensions (3D) in a graphic content on a display), database libraries (e.g., SQLite to provide various relational database functions), web libraries (e.g., WebKit to provide web browsing functionality), and the like. The libraries 1310 can also include a wide variety of other libraries 1328 to provide many other APIs to the applications 1306.

The frameworks 1308 provide a high-level common infrastructure that is used by the applications 1306. For example, the frameworks 1308 provide various graphical user interface (GUI) functions, high-level resource management, and high-level location services. The frameworks 1308 can provide a broad spectrum of other APIs that can be used by the applications 1306, some of which may be specific to a particular operating system or platform.

In an example embodiment, the applications 1306 may include a home application 1336, a contacts application 1330, a browser application 1332, a book reader application 1334, a location application 1342, a media application 1344, a messaging application 1346 (e.g., corresponding to the messaging client application 104), a game application 1348, and a broad assortment of other applications such as third-party applications 1340. The applications 1306 are programs that execute functions defined in the programs. Various programming languages can be employed to create one or more of the applications 1306, structured in a variety of manners, such as object-oriented programming languages (e.g., Objective-C. Java. or C++) or procedural programming languages (e.g., C or assembly language). In a specific example, the third-party applications 1340 (e.g., applications developed using the ANDROID™ or IOS™ software development kit (SDK) by an entity other than the vendor of the particular platform) may be mobile software running on a mobile operating system such as IOS™, ANDROID™. WINDOWS® Phone, or another mobile operating system. In this example, the third-party applications 1340 can invoke the API calls 1350 provided by the operating system 1312 to facilitate functionality described herein.

FIG. 14 is a diagrammatic representation of a machine 1400 within which instructions 1408 (e.g., software, a program, an application, an applet, an app, or other executable code) for causing the machine 1400 to perform any one or more of the methodologies discussed herein may be executed. For example, the instructions 1408 may cause the machine 1400 to execute any one or more of the methods described herein. The instructions 1408 transform the general, non-programmed machine 1400 into a particular machine 1400 programmed to carry out the described and illustrated functions in the manner described. The machine 1400 may operate as a standalone device or may be coupled (e.g., networked) to other machines. In a networked deployment, the machine 1400 may operate in the capacity of a server machine or a client machine in a server-client network environment, or as a peer machine in a peer-to-peer (or distributed) network environment. The machine 1400 may comprise, but not be limited to, a server computer, a client computer, a personal computer (PC), a tablet computer, a laptop computer, a netbook, a set-top box (STB), a PDA, an entertainment media system, a cellular telephone, a smart phone, a mobile device, a wearable device (e.g., a smart watch), a smart home device (e.g., a smart appliance), other smart devices, a web appliance, a network router, a network switch, a network bridge, or any machine capable of executing the instructions 1408, sequentially or otherwise, that specify actions to be taken by the machine 1400. Further, while only a single machine 1400 is illustrated, the term “machine” shall also be taken to include a collection of machines that individually or jointly execute the instructions 1408 to perform any one or more of the methodologies discussed herein.

The machine 1400 may include processors 1402, memory 1404, and I/O components 1444, which may be configured to communicate with each other via a bus 1442. In an example embodiment, the processors 1402 (e.g., a Central Processing Unit (CPU), a Reduced Instruction Set Computing (RISC) processor, a Complex Instruction Set Computing (CISC) processor, a Graphics Processing Unit (GPU), a Digital Signal Processor (DSP), an ASIC, a Radio-Frequency Integrated Circuit (RFIC), another processor, or any suitable combination thereof) may include, for example, a processor 1406 and a processor 1410 that execute the instructions 1408. The term “processor” is intended to include multi-core processors that may comprise two or more independent processors (sometimes referred to as “cores”) that may execute instructions contemporaneously. Although FIG. 14 shows multiple processors 1402, the machine 1400 may include a single processor with a single core, a single processor with multiple cores (e.g., a multi-core processor), multiple processors with a single core, multiple processors with multiples cores, or any combination thereof.

The memory 1404 includes a main memory 1412, a static memory 1414, and a storage unit 1416, both accessible to the processors 1402 via the bus 1442. The main memory 1404, the static memory 1414, and storage unit 1416 store the instructions 1408 embodying any one or more of the methodologies or functions described herein. The instructions 1408 may also reside, completely or partially, within the main memory 1412, within the static memory 1414, within machine-readable medium 1418 within the storage unit 1416, within at least one of the processors 1402 (e.g., within the processor's cache memory), or any suitable combination thereof, during execution thereof by the machine 1400.

The I/O components 1444 may include a wide variety of components to receive input, provide output, produce output, transmit information, exchange information, capture measurements, and so on. The specific I/O components 1444 that are included in a particular machine will depend on the type of machine. For example, portable machines such as mobile phones may include a touch input device or other such input mechanisms, while a headless server machine will likely not include such a touch input device. It will be appreciated that the I/O components 1444 may include many other components that are not shown in FIG. 14 . In various example embodiments, the I/O components 1444 may include output components 1428 and input components 1430. The output components 1428 may include visual components (e.g., a display such as a plasma display panel (PDP), a light emitting diode (LED) display, a liquid crystal display (LCD), a projector, or a cathode ray tube (CRT)), acoustic components (e.g., speakers), haptic components (e.g., a vibratory motor, resistance mechanisms), other signal generators, and so forth. The input components 1430 may include alphanumeric input components (e.g., a keyboard, a touch screen configured to receive alphanumeric input, a photo-optical keyboard, or other alphanumeric input components), point-based input components (e.g., a mouse, a touchpad, a trackball, a joystick, a motion sensor, or another pointing instrument), tactile input components (e.g., a physical button, a touch screen that provides location and/or force of touches or touch gestures, or other tactile input components), audio input components (e.g., a microphone), and the like.

In further example embodiments, the I/O components 1444 may include biometric components 1432, motion components 1434, environmental components 1436, or position components 1438, among a wide array of other components. For example, the biometric components 1432 include components to detect expressions (e.g., hand expressions, facial expressions, vocal expressions, body gestures, or eye tracking), measure biosignals (e.g., blood pressure, heart rate, body temperature, perspiration, or brain waves), identify a person (e.g., voice identification, retinal identification, facial identification, fingerprint identification, or electroencephalogram-based identification), and the like. The motion components 1434 include acceleration sensor components (e.g., accelerometer), gravitation sensor components, rotation sensor components (e.g., gyroscope), and so forth. The environmental components 1436 include, for example, illumination sensor components (e.g., photometer), temperature sensor components (e.g., one or more thermometers that detect ambient temperature), humidity sensor components, pressure sensor components (e.g., barometer), acoustic sensor components (e.g., one or more microphones that detect background noise), proximity sensor components (e.g., infrared sensors that detect nearby objects), gas sensors (e.g., gas detection sensors to detection concentrations of hazardous gases for safety or to measure pollutants in the atmosphere), or other components that may provide indications, measurements, or signals corresponding to a surrounding physical environment. The position components 1438 include location sensor components (e.g., a GPS receiver component), altitude sensor components (e.g., altimeters or barometers that detect air pressure from which altitude may be derived), orientation sensor components (e.g., magnetometers), and the like.

Communication may be implemented using a wide variety of technologies. The I/O components 1444 further include communication components 1440 operable to couple the machine 1400 to a network 1420 or devices 1422 via a coupling 1426 and a coupling 1424, respectively. For example, the communication components 1440 may include a network interface component or another suitable device to interface with the network 1420. In further examples, the communication components 1440 may include wired communication components, wireless communication components, cellular communication components, Near Field Communication (NFC) components. Bluetooth® components (e.g., Bluetooth® Low Energy), Wi-Fi® components, and other communication components to provide communication via other modalities. The devices 1422 may be another machine or any of a wide variety of peripheral devices (e.g., a peripheral device coupled via a USB).

Moreover, the communication components 1440 may detect identifiers or include components operable to detect identifiers. For example, the communication components 1440 may include Radio Frequency Identification (RFID) tag reader components. NFC smart tag detection components, optical reader components (e.g., an optical sensor to detect one-dimensional bar codes such as Universal Product Code (UPC) bar code, multi-dimensional bar codes such as Quick Response (QR) code. Aztec code, Data Matrix, Dataglyph. MaxiCode, PDF417. Ultra Code, UCC RSS-2D bar code, and other optical codes), or acoustic detection components (e.g., microphones to identify tagged audio signals). In addition, a variety of information may be derived via the communication components 1440, such as location via Internet Protocol (IP) geolocation, location via Wi-Fi® signal triangulation, location via detecting an NFC beacon signal that may indicate a particular location, and so forth.

The various memories (e.g., memory 1404, main memory 1412, static memory 1414, and/or memory of the processors 1402) and/or storage unit 1416 may store one or more sets of instructions and data structures (e.g., software) embodying or used by any one or more of the methodologies or functions described herein. These instructions (e.g., the instructions 1408), when executed by processors 1402, cause various operations to implement the disclosed embodiments.

The instructions 1408 may be transmitted or received over the network 1420, using a transmission medium, via a network interface device (e.g., a network interface component included in the communication components 1440) and using any one of a number of well-known transfer protocols (e.g., hypertext transfer protocol (HTTP)). Similarly, the instructions 1408 may be transmitted or received using a transmission medium via the coupling 1424 (e.g., a peer-to-peer coupling) to the devices 1422.

A “carrier signal” refers to any intangible medium that is capable of storing, encoding, or carrying instructions for execution by the machine, and includes digital or analog communications signals or other intangible media to facilitate communication of such instructions. Instructions may be transmitted or received over a network using a transmission medium via a network interface device.

A “client device” refers to any machine that interfaces to a communications network to obtain resources from one or more server systems or other client devices. A client device may be, but is not limited to, a mobile phone, desktop computer, laptop, portable digital assistants (PDAs), smartphones, tablets, ultrabooks, netbooks, laptops, multi-processor systems, microprocessor-based or programmable consumer electronics, game consoles, set-top boxes, or any other communication device that a user may use to access a network.

A “communication network” refers to one or more portions of a network that may be an ad hoc network, an intranet, an extranet, a virtual private network (VPN), a local area network (LAN), a wireless LAN (WLAN), a wide area network (WAN), a wireless WAN (WWAN), a metropolitan area network (MAN), the Internet, a portion of the Internet, a portion of the Public Switched Telephone Network (PSTN), a plain old telephone service (POTS) network, a cellular telephone network, a wireless network, a Wi-Fi® network, another type of network, or a combination of two or more such networks. For example, a network or a portion of a network may include a wireless or cellular network and the coupling may be a Code Division Multiple Access (CDMA) connection, a Global System for Mobile communications (GSM) connection, or other types of cellular or wireless coupling. In this example, the coupling may implement any of a variety of types of data transfer technology, such as Single Carrier Radio Transmission Technology (1×RTT), Evolution-Data Optimized (EVDO) technology, General Packet Radio Service (GPRS) technology, Enhanced Data rates for GSM Evolution (EDGE) technology, third Generation Partnership Project (3GPP) including 3G, fourth generation wireless (4G) networks. Universal Mobile Telecommunications System (UMTS), High Speed Packet Access (HSPA). Worldwide Interoperability for Microwave Access (WiMAX). Long Term Evolution (LTE) standard, others defined by various standard-setting organizations, other long-range protocols, or other data transfer technology.

A “component” refers to a device, physical entity, or logic having boundaries defined by function or subroutine calls, branch points, APIs, or other technologies that provide for the partitioning or modularization of particular processing or control functions. Components may be combined via their interfaces with other components to carry out a machine process. A component may be a packaged functional hardware unit designed for use with other components and a part of a program that usually performs a particular function of related functions. Components may constitute either software components (e.g., code embodied on a machine-readable medium) or hardware components. A “hardware component” is a tangible unit capable of performing certain operations and may be configured or arranged in a certain physical manner. In various example embodiments, one or more computer systems (e.g., a standalone computer system, a client computer system, or a server computer system) or one or more hardware components of a computer system (e.g., a processor or a group of processors) may be configured by software (e.g., an application or application portion) as a hardware component that operates to perform certain operations as described herein. A hardware component may also be implemented mechanically, electronically, or any suitable combination thereof. For example, a hardware component may include dedicated circuitry or logic that is permanently configured to perform certain operations. A hardware component may be a special-purpose processor, such as a field-programmable gate array (FPGA) or an application specific integrated circuit (ASIC). A hardware component may also include programmable logic or circuitry that is temporarily configured by software to perform certain operations. For example, a hardware component may include software executed by a general-purpose processor or other programmable processor. Once configured by such software, hardware components become specific machines (or specific components of a machine) uniquely tailored to perform the configured functions and are no longer general-purpose processors. It will be appreciated that the decision to implement a hardware component mechanically, in dedicated and permanently configured circuitry, or in temporarily configured circuitry (e.g., configured by software), may be driven by cost and time considerations. Accordingly, the phrase “hardware component” (or “hardware-implemented component”) should be understood to encompass a tangible entity, be that an entity that is physically constructed, permanently configured (e.g., hardwired), or temporarily configured (e.g., programmed) to operate in a certain manner or to perform certain operations described herein. Considering embodiments in which hardware components are temporarily configured (e.g., programmed), each of the hardware components need not be configured or instantiated at any one instance in time. For example, where a hardware component comprises a general-purpose processor configured by software to become a special-purpose processor, the general-purpose processor may be configured as respectively different special-purpose processors (e.g., comprising different hardware components) at different times. Software accordingly configures a particular processor or processors, for example, to constitute a particular hardware component at one instance of time and to constitute a different hardware component at a different instance of time. Hardware components can provide information to, and receive information from, other hardware components. Accordingly, the described hardware components may be regarded as being communicatively coupled. Where multiple hardware components exist contemporaneously, communications may be achieved through signal transmission (e.g., over appropriate circuits and buses) between or among two or more of the hardware components. In embodiments in which multiple hardware components are configured or instantiated at different times, communications between such hardware components may be achieved, for example, through the storage and retrieval of information in memory structures to which the multiple hardware components have access. For example, one hardware component may perform an operation and store the output of that operation in a memory device to which it is communicatively coupled. A further hardware component may then, at a later time, access the memory device to retrieve and process the stored output. Hardware components may also initiate communications with input or output devices, and can operate on a resource (e.g., a collection of information). The various operations of example methods described herein may be performed, at least partially, by one or more processors that are temporarily configured (e.g., by software) or permanently configured to perform the relevant operations. Whether temporarily or permanently configured, such processors may constitute processor-implemented components that operate to perform one or more operations or functions described herein. As used herein, “processor-implemented component” refers to a hardware component implemented using one or more processors. Similarly, the methods described herein may be at least partially processor-implemented, with a particular processor or processors being an example of hardware. For example, at least some of the operations of a method may be performed by one or more processors or processor-implemented components. Moreover, the one or more processors may also operate to support performance of the relevant operations in a “cloud computing” environment or as a “software as a service” (SaaS). For example, at least some of the operations may be performed by a group of computers (as examples of machines including processors), with these operations being accessible via a network (e.g., the Internet) and via one or more appropriate interfaces (e.g., an API). The performance of certain of the operations may be distributed among the processors, not only residing within a single machine, but deployed across a number of machines. In some example embodiments, the processors or processor-implemented components may be located in a single geographic location (e.g., within a home environment, an office environment, or a server farm). In other example embodiments, the processors or processor-implemented components may be distributed across a number of geographic locations.

A “computer-readable medium” refers to both machine-storage media and transmission media. Thus, the terms include both storage devices/media and carrier waves/modulated data signals. The terms “machine-readable medium,” “computer-readable medium” and “device-readable medium” mean the same thing and may be used interchangeably in this disclosure.

An “ephemeral message” refers to a message that is accessible for a time-limited duration. An ephemeral message may be a text, an image, a video and the like. The access time for the ephemeral message may be set by the message sender. Alternatively, the access time may be a default setting or a setting specified by the recipient. Regardless of the setting technique, the message is transitory.

A “machine-storage medium” refers to a single or multiple storage devices and/or media (e.g., a centralized or distributed database, and/or associated caches and servers) that store executable instructions, routines and/or data. The term shall accordingly be taken to include, but not be limited to, solid-state memories, and optical and magnetic media, including memory internal or external to processors. Specific examples of machine-storage media, computer-storage media and/or device-storage media include non-volatile memory, including by way of example semiconductor memory devices, e.g., erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM). FPGA, and flash memory devices; magnetic disks such as internal hard disks and removable disks; magneto-optical disks; and CD-ROM and DVD-ROM disks The terms “machine-storage medium,” “device-storage medium,” “computer-storage medium” mean the same thing and may be used interchangeably in this disclosure. The terms “machine-storage media,” “computer-storage media.” and “device-storage media” specifically exclude carrier waves, modulated data signals, and other such media, at least some of which are covered under the term “signal medium.”

A “processor” refers to any circuit or virtual circuit (a physical circuit emulated by logic executing on an actual processor) that manipulates data values according to control signals (e.g., “commands”, “op codes”, “machine code”, etc.) and which produces corresponding output signals that are applied to operate a machine. A processor may, for example, be a Central Processing Unit (CPU), a Reduced Instruction Set Computing (RISC) processor, a Complex Instruction Set Computing (CISC) processor, a Graphics Processing Unit (GPU), a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Radio-Frequency Integrated Circuit (RFIC) or any combination thereof. A processor may further be a multi-core processor having two or more independent processors (sometimes referred to as “cores”) that may execute instructions contemporaneously.

A “signal medium” refers to any intangible medium that is capable of storing, encoding, or carrying the instructions for execution by a machine and includes digital or analog communications signals or other intangible media to facilitate communication of software or data. The term “signal medium” shall be taken to include any form of a modulated data signal, carrier wave, and so forth. The term “modulated data signal” means a signal that has one or more of its characteristics set or changed in such a matter as to encode information in the signal. The terms “transmission medium” and “signal medium” mean the same thing and may be used interchangeably in this disclosure.

Changes and modifications may be made to the disclosed embodiments without departing from the scope of the present disclosure. These and other changes or modifications are intended to be included within the scope of the present disclosure, as expressed in the following claims. 

What is claimed is:
 1. A method, comprising: receiving, from a first device associated with a first user of a messaging application, an indication that audio output of the first device is via an external audio output device; providing, in response to the receiving, the indication to a second device associated with a second user of the messaging application, to cause display of a graphical element within the messaging application on the second device, the graphical element being user-selectable to initiate audio streaming to the first device; receiving, from the second device and in response to the providing, audio input and a request to stream the audio input in real time to the first device, the request corresponding to user selection of the graphical element by the second user; providing, to the first device, the audio input for streaming in real time on the first device; and causing, in a case where the messaging application is not running or not foregrounded on the first device, a notification to be displayed on a lock screen of the first device, to notify the first user of the audio input being streamed in real time from the messaging application on the second device.
 2. The method of claim 1, wherein the audio input is for streaming on the first device via the external audio output device.
 3. The method of claim 1, further comprising: storing the audio input as an audio file; and providing, to the first device, a link to the audio file for display within a message thread on the first device, wherein user selection of the link provides for playback of the audio file on the first device.
 4. The method of claim 1, further comprising: determining that providing the audio input for streaming is authorized, based on a setting shared by the first user and the second user with respect to the messaging application.
 5. The method of claim 1, wherein the user selection corresponds to a press-and-hold gesture.
 6. The method of claim 1, wherein the external audio output device comprises at least one of headphones or earbuds.
 7. The method of claim 1, wherein the audio input corresponds to voice input provided by the second user at the second device.
 8. The method of claim 1, wherein the indication further causes the messaging application on the second device to display a second notification that the first user is wearing headphones.
 9. A system comprising: a processor; and a memory storing instructions that, when executed by the processor, configure the system to: receive, from a first device associated with a first user of a messaging application, an indication that audio output of the first device is via an external audio output device; provide, in response to the receiving, the indication to a second device associated with a second user, of the messaging application, to cause display of a graphical element within the messaging application on the second device, the graphical element being user-selectable to initiate audio streaming to the first device; receive, from the second device and in response to the providing, audio input and a request to stream the audio input in real time to the first device, the request corresponding to user selection of the graphical element by the second user; provide, to the first device, the audio input for streaming in real time on the first device; and cause, in a case where the messaging application is not running or not foregrounded on the first device, a notification to be displayed on a lock screen of the first device, to notify the first user of the audio input being streamed in real time from the messaging application on the second device.
 10. The system of claim 9, wherein the audio input is for streaming on the first device via the external audio output device.
 11. The system of claim 9, wherein the instructions further configure the system to: store the audio input as an audio file; and provide, to the first device, a link to the audio file for display within a message thread on the first device, wherein user selection of the link provides for playback of the audio file on the first device.
 12. The system of claim 9, wherein the instructions further configure the system to: determine that providing the audio input for streaming is authorized, based on a setting shared by the first user and the second user with respect to the messaging application.
 13. The system of claim 9, wherein the user selection corresponds to a press-and-hold gesture.
 14. The system of claim 9, wherein the external audio output device comprises at least one of headphones or earbuds.
 15. The system of claim 9, wherein the audio input corresponds to voice input provided by the second user at the second device.
 16. A non-transitory computer-readable storage medium, the computer-readable storage medium including instructions that when executed by a computer, cause the computer to: receive, from a first device associated with a first user of a messaging application, an indication that audio output of the first device is via an external audio output device; provide, in response to the receiving, the indication to a second device associated with a second user, of the messaging application, to cause display of a graphical element within the messaging application on the second device, the graphical element being user-selectable to initiate audio streaming to the first device; receive, from the second device and in response to the providing, audio input and a request to stream the audio input in real time to the first device, the request corresponding to user selection of the graphical element by the second user; provide, to the first device, the audio input for streaming in real time on the first device; and cause, in a case where the messaging application is not running or not foregrounded on the first device, a notification to be displayed on a lock screen of the first device, to notify the first user of the audio input being streamed in real time from the messaging application on the second device.
 17. The computer-readable storage medium of claim 16, wherein the audio input is for streaming on the first device via the external audio output device. 